Re: [Intel-gfx] [PATCH v2 2/5] drm/i915: Reinitialize sink scrambling/TMDS clock ratio on HPD

2018-01-30 Thread Lyude Paul
On Wed, 2018-01-17 at 21:21 +0200, Ville Syrjala wrote: > From: Ville Syrjälä > > The LG 4k TV I have doesn't deassert HPD when I turn the TV off, but > when I turn it back on it will pulse the HPD line. By that time it has > forgotten everything we told it about

[Intel-gfx] [PATCH v2 2/5] drm/i915: Reinitialize sink scrambling/TMDS clock ratio on HPD

2018-01-18 Thread Ville Syrjala
From: Ville Syrjälä The LG 4k TV I have doesn't deassert HPD when I turn the TV off, but when I turn it back on it will pulse the HPD line. By that time it has forgotten everything we told it about scrambling and the clock ratio. Hence if we want to get a picture